Has anybody successfully used the blanked our radio buttons on either an LR3 or RRS?

There's a long "button" on the right hand side -- above the telephone button -- of the stereo that seems like it would be perfect for controlling auxiliary lighting, winches, etc., with an OEM look. 3-buttons in the same style & size as FM, AM, CD buttons on the left side.

 

There probably isn't enough room behind that panel to do anything with aftermarket switches, especially difficult repurposing radio buttons

Just get the plate that replaces the ashtray/lighter ports that accepts multiple Carling switches, and still retains charging ports, even can have a battery voltmeter - super easy, clean, and cheap enough

 

Yep, only a few mm of space behind that then a PCB.